In their 2003 review of the lens DPReview said:" Certainly in terms of the studio results, it's the nearest we've yet found to a technically perfect lens (although it's important to appreciate that we haven't yet tested any comparable short tele macros for other formats). It's impressively sharp right across the frame even wide open, shows no significant lateral chromatic aberration or vignetting, and is near-perfectly corrected for distortion. Real world results not only bear this out, but also show that the lens maintains image quality across the entire focus distance range, making it suitable for macro, portraits and general-purpose short telephoto use alike - no mean feat at all. And in design terms it's compact and reasonably lightweight, yet solidly build and weatherproofed, providing a combination of features unmatched by any other manufacturer."Recently, I bought one of these Olympus Digital 50/2 ED Macro AFs and compared it against my other two 50s: a Konica Hexanon AR 50/1.7 and a Carl Zeiss (German-nade) Planar 50/1.8 in Rollei mount. At every aperture, the Olympus obliterated its two contenders in center resolution, corner resolution, micro contrast, color accuracy, and color saturation. The results were not even close. I will be selling my Konica and Zeiss.